Device for unwinding or applying adhesive tape

ABSTRACT

The invention relates to a device for unwinding or applying adhesive tape, especially double-sided adhesive tape, to be unwound from a roil of adhesive tape( 5 ). Said device is comprised of a discoid unwinding body ( 1 ) and of a roll accommodating device ( 2 ) which can be placed thereon, whereby the unwinding body and the accommodating device share a common central axis, around which the roll of adhesive tape ( 5 ) rotates during unwinding. The discoid unwinding body ( 1 ) has a supporting surface ( 3 ) on which one side of the roll of adhesive tape roll fully rests, and from which the accommodating device ( 2 ) protrudes. The outer diameter of the roll accommodating device is smaller than the inside diameter of the roll of adhesive tape ( 5 ) to be accommodated thereon to such an extent that the roll can be easily inserted onto the roll accommodating device ( 2 ).

[0001] The invention relates to a device for unwinding or applyingadhesive tape, especially double-sided adhesive tape, which is to beunwound from a roll of adhesive tape.

[0002] A plurality of unwinding aids is known from the state of the artfor unwinding adhesive tapes. For this purpose, a roll of adhesive tapeis usually taken up completely in a housing, in which it is guided overone or several studs to an opening of the housing, from which theadhesive tape can be pulled and unwound for processing. These unwindingaids generally are structurally expensive and therefore frequently tooexpensive for the user/consumer for a possibly only single use, so thatmany do without using an unwinding aid and apply the adhesive tape“freehandedly” directly from an adhesive tape roll to a substrate.However, especially when applying very wide adhesive tapes, as used, forexample, for laying wall-to-wall carpeting, when gluing base plates,which must, moreover, be applied accurately over a greater distance, itis almost impossible to bring this about without an unwinding aid.

[0003] It is therefore an object of the invention to provide a device,which can be produced particularly easily and therefore inexpensively,for applying or unwinding adhesive tape, especially double-sidedadhesive tape, rapidly and precisely on a substrate.

[0004] This objective is accomplished pursuant to the invention with adevice for unwinding or applying adhesive tape, which is to be unwoundfrom a roll of adhesive tape, with the distinguishing features ofclaim 1. Advantageous developments of the inventive object are given inthe dependent claims 2 to 6.

[0005] Pursuant to the invention, the device for unwinding or applyingadhesive tape, which is to be unwound from a roll of adhesive tape,consists of a discoid unwinding body and of a roll-accommodating device,mounted thereon. The device thus consists only of two parts, which canbe constructed integrally connected with one another or also separatelyfrom one another. This two-part construction of the device can beproduced very simply and easily and therefore also inexpensively. Thediscoid unwinding body and the roll-accommodating device have a commoncentral axis, about which the roll of adhesive tape roll rotates duringthe unwinding process. Moreover, the inventive, discoid unwinding bodyhas a supporting surface, on which the roll of adhesive tape is seatedfully laterally. Moreover, the supporting surface not only supports theroll of adhesive tape lying on it, but also offers protection againstcontamination by dust or other contaminants, which easily adhere to thesides of the rolls of adhesive tape. The roll-accommodating deviceprotrudes from the supporting surface of the unwinding body. Theexternal diameter of the roll-accommodating device is slightly less thanthe internal diameter of the roll of adhesive tape, which is to beaccommodate thereon, and preferably by 1 or 2 mm, so that the roll ofadhesive tape can be slipped easily onto the external diameter of theroll-accommodating device. In this way, a roll of adhesive tape can beplaced easily on the roll-accommodating device and held by it thereonand unwound.

[0006] Pursuant to an advantageous further development of the inventivedevice, the supporting surface of the discoid unwinding body isconstructed as a sliding surface. It is particularly advantageous if thewhole of the supporting surface is constructed as a sliding surface.This permits the adhesive tape, resting fully on the supporting surface,to be unwound easily from the device with little friction.

[0007] According to a further preferred embodiment, a silicone paper,which is provided on the support surface, is particularly suitable aslubricant and release agent. The silicone paper serves as a releaselayer between the sides of the rolls of adhesive tape and the unwindingbody, so that these cannot adhere to one another and the adhesive tapecan be unwound easily from the device.

[0008] In a further, preferred embodiment, the roll-accommodating devicehas a peripheral surface, which accommodates the roll of adhesive tapeand protrudes from the supporting surface preferably at a height of 2cm.

[0009] Preferably, the discoid unwinding body is circular and has adiameter ranging from 10 to 30 cm, depending on the size of the roll ofadhesive tape. A diameter of 19.5 cm is particularly advantageous. Analso circular recess is provided in the center of the discoid unwindingbody and has a diameter ranging from 30 to 90 mm. The diameter of therecess corresponds to the diameter of the roll-accommodating device,which is disposed in the recess. The roll-accommodating device can beprovide as a ring in the recess or also disposed therein as a thickdisk, so that the whole of the recess is filled thereby. The thicknessof the discoid unwinding body preferably ranges from 0.5 to 15 mm. Inparticular, the discoid unwinding body is about 5 mm thick. Instead of adiscoid unwinding body, the roll-accommodating device may have two orpreferably three elevations, which are at a uniform distance from thecenter of rotation and, in the interior of the recess, form a holdingdevice for the roll of adhesive tape in the form of a two-point orthree-point mounting. If the device, in a preferred manner, consists ofcardboard, the elevations can be produced, for example, by bending upthe cardboard when die-cutting it. They may, however, also be glued on,constructed as plastic or metal knots and fastened to the cardboard byknown procedures.

[0010] Since the thickness of the unwinding body determines the distanceof the adhesive tape strip from a wall, on which the adhesive tape is tobe applied and which is perpendicular to a substrate, the device, duringthe application of the adhesive tape, being placed with its surface,opposite and parallel to the supporting surface, on the substrate, asmall thickness of the unwinding body is advantageous, if the adhesivetape is to be applied close to the substrate at the wall perpendicularto it. A greater distance from the substrate at the wall may also bedesirable, if, for example, wider base plates are to be mounted on awall. An unwinding body with a greater thickness is to be used for thispurpose.

[0011] It is, furthermore, of advantage if the discoid basic body isproduced from a hard and solid material, such as a metal or plastic.Solid cardboard is a particularly advantageous material, since it isvery advantageously priced and thus lowers the manufacturing costenormously. In the case of an advantageously priced manufacturingprocess of the device from cardboard, it is therefore possible to addthe inventive device for unwinding and applying the adhesive tape at thesame time to each adhesive tape roll, so that a compact unit isobtained. This is of advantage particularly for the consumer in that,whenever he purchases an adhesive tape roll, he also at the same time,has the corresponding unwinding device in hand.

[0012] The inventive device for unwinding and applying adhesive tape,unwound from a roll of adhesive tape by means of a preferred embodiment,is explained in greater detail in the following description and shown inthe drawings in which

[0013]FIG. 1 shows a cross section through the inventive device forunwinding and applying adhesive tape, which is unwound from a roll ofadhesive tape and

[0014]FIG. 2 shows the device of FIG. 1 for unwinding and applyingadhesive tape, which is unwound from a roll of adhesive tape, in a planview

[0015]FIG. 1 shows a cross section through the inventive device forunwinding and applying an adhesive tape, which is unwound from a roll ofadhesive tape. In the center of the discoid unwinding body 1, there is arecess 6, in which a device 2 for accommodating the roll is disposed.The device 2 for accommodating the roll protrudes perpendicularly to thediscoid unwinding body 1 from this unwinding body 1 or from a supportingsurface 3 of the discoid unwinding body 1. A roll 5 of adhesive tape isindicated by the broken line and the reference symbol 5. It is placed onthe device 2, for accommodating the roll, guided slightly about aperipheral surface 4 of the unwinding device 2 and rests with itsunderside on the supporting surface 3 of the discoid unwinding body 1. Alower section of the peripheral surface 4 of the unwinding device 2 isconnected with the discoid unwinding body 1. For applying adhesive tapeon a wall, the unwinding body is placed with its underside 8 on asubstrate or floor and, at the same time, placed with a peripheralsurface 7 of the discoid unwinding body 1 against the wall, which isperpendicular to the substrate.

[0016]FIG. 2 shows a plan view of the inventive device of FIG. 1 forunwinding and applying adhesive tape, which is to be unwound from a rollof adhesive tape. The roll-accommodating device 2 is disposed in therecess 6 in the center of the discoid unwinding body 1. An adhesive tape5, lying laterally on the discoid unwinding body, is indicated by thebroken line.

List of Reference Symbols

[0017]1. discoid unwinding body

[0018]2. roll-accommodating device

[0019]3. supporting surface (discoid unwinding body)

[0020]4. peripheral surface (roll-accommodating device)

[0021]5. adhesive tape roll

[0022]6. recess

[0023]7. peripheral surface (discoid unwinding body)

[0024]8. underside (discoid unwinding body)

1. A device for unwinding and applying adhesive tape, especiallydouble-sided adhesive tape, which is to be unwound from a roll ofadhesive tape, and comprises a discoid unwinding body (1) and aroll-accommodating device (2) mounted thereon, which have a commoncentral axis, about which the adhesive tape roll (5) rotates duringunwinding, the discoid unwinding body (1) having a supporting surface(3), on which one side of the adhesive tape roll lies fully and fromwhich the roll-accommodating device (2) protrudes, the external diameterof the roll-accommodating device (2) being smaller than the internaldiameter of the adhesive tape roll (5), which is to be accommodatedthereon, by such an amount, that the adhesive tape roll (5) can easilybe slipped onto the roll-accommodating device.
 2. The device of claim 1,for which the surface, especially the whole surface, of the supportingsurface (3) of the discoid unwinding body (1) is constructed as asliding surface.
 3. The device of claims 1 or 2, for which a siliconepaper is provided on the first surface (3) of the discoid unwinding body(1).
 4. The device of one of the claims 1 to 3, for which theroll-accommodating device (2) has a peripheral surface (4), which servesto accommodate the adhesive tape roll (5) and protrudes essentiallyperpendicularly from the supporting surface (3), especially at a heightof 2 cm.
 5. The device of claim 4, for which the peripheral surface isformed partially by at least three elevations, which are at a height of0.5 to 10 cm, and especially of 2 cm above the supporting surface. 6.The device of one of the claims 1 to 5, for which the discoid unwindingbody (1) has a diameter to 10 to 30 cm, a recess (6), disposed in itscenter, with a diameter of 30 to 90 mm; corresponding to the diameter ofthe roll-accommodating device (2), and a thickness of 0.5 to 15 mm. 7.The device of one of the acclaims 1 to 6, the discoid unwinding body (1)of which is produced from a hard material, especially from metal,plastic or cardboard